{"id":11455,"date":"2023-02-14T18:08:22","date_gmt":"2023-02-14T10:08:22","guid":{"rendered":"https:\/\/blog.ywdevops.cn\/?p=11455"},"modified":"2026-04-08T10:11:47","modified_gmt":"2026-04-08T02:11:47","slug":"etcd","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2023\/02\/14\/etcd\/","title":{"rendered":"etcd\u7684\u5907\u4efd\u4e0e\u56de\u6062\u590d"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">etcd\u662f Kubernetes\u7684\u5173\u952e\u7ec4\u4ef6\uff0c\u56e0\u4e3a\u5b83\u5b58\u50a8\u4e86\u96c6\u7fa4\u7684\u6574\u4e2a\u72b6\u6001\uff1a\u5176\u914d\u7f6e\uff0c\u89c4\u683c\u4ee5\u53ca\u8fd0\u884c\u4e2d\u7684\u5de5\u4f5c\u8d1f\u8f7d\u7684\u72b6\u6001\uff0c\u56e0\u6b64\u9700\u8981\u5bf9etcd\u8fdb\u884c\u5b9a\u671f\u5907\u4efd\uff0c\u51fa\u73b0\u6545\u969c\u65f6\u5019\u53ef\u5feb\u901f\u6062\u590d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u3001<strong>\u5bb9\u5668\u65b9\u5f0f\u5b89\u88c5\u7684etcd<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73af\u5883\uff1akubeadm\u5b89\u88c5\u7684k8s\u96c6\u7fa4\u53ea\u6709\u4e00\u4e2amaster\u548c\u4e00\u4e2aetcd\uff0c\u90fd\u662f\u5bb9\u5668\u8fd0\u884c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u67e5\u770betcd\u8d44\u6e90\u6587\u4ef6\uff0c\u6570\u636e\u76ee\u5f55\u4f4d\u7f6e\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"708\" height=\"421\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/1-3.png\" alt=\"\" class=\"wp-image-11462\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/1-3.png 708w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/1-3-300x178.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/1-3-600x357.png 600w\" sizes=\"auto, (max-width: 708px) 100vw, 708px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdb\u5165\u76ee\u5f55\/var\/lib\/etcd\u4e0b\u53ef\u4ee5\u770b\u5230\u5b58\u5728\u4e24\u4e2a\u6587\u4ef6\u5939:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>snap\uff1a\u5b58\u653e\u5feb\u7167\u6570\u636e,etcd\u9632\u6b62WAL\u6587\u4ef6\u8fc7\u591a\u800c\u8bbe\u7f6e\u7684\u5feb\u7167\uff0c\u5b58\u50a8etcd\u6570\u636e\u72b6\u6001<\/li>\n\n\n\n<li>wal\uff1a\u5b58\u653e\u9884\u5199\u5f0f\u65e5\u5fd7,\u6700\u5927\u7684\u4f5c\u7528\u662f\u8bb0\u5f55\u4e86\u6574\u4e2a\u6570\u636e\u53d8\u5316\u7684\u5168\u90e8\u5386\u7a0b\u3002\u5728etcd\u4e2d\uff0c\u6240\u6709\u6570\u636e\u7684\u4fee\u6539\u5728\u63d0\u4ea4\u524d\uff0c\u90fd\u8981\u5148\u5199\u5165\u5230WAL\u4e2d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u4e0b\u8f7d\u5907\u4efd\u5de5\u5177\u6216\u8005\u76f4\u63a5\u4eceetcd\u5bb9\u5668\u5185\u5c06\u5de5\u5177\u590d\u5236\u51fa\u6765\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u3001wget https:\/\/github.com\/etcd-io\/etcd\/releases\/download\/v3.5.1\/etcd-v3.5.1-linux-amd64.tar.gz\n    tar -xzvf etcd-v3.5.1-linux-amd64.tar.gz\n    cd etcd-v3.5.1-linux-amd64\/\n    cp etcdctl \/usr\/local\/bin\/\n2\u3001 docker cp \u5bb9\u5668\u540d:\/usr\/local\/bin\/etcdctl   \/usr\/bin<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u6267\u884c\u547d\u4ee4\uff0c\u5907\u4efdetcd\u6570\u636e\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 etcdctl --endpoints=\"https:\/\/127.0.0.1:2379\"  --cert=\"\/etc\/kubernetes\/pki\/etcd\/server.crt\"  --key=\"\/etc\/kubernetes\/pki\/etcd\/server.key\"  --cacert=\"\/etc\/kubernetes\/pki\/etcd\/ca.crt\"   snapshot save backup.db<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ETCDCTL_API=3\uff0c\u4f7f\u7528 Etcd \u7684 v3 \u7248\u672c\u7684 API\uff0c\u4ece k8s 1.13 \u5f00\u59cb\uff0ck8s\u4e0d\u518d\u652f\u6301 v2 \u7248\u672c\u7684 etcd<\/li>\n\n\n\n<li>endponits\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u67e5\u627e\uff0c\u4e00\u822c\u4f1a\u6709\u4e24\u4e2aIP\uff1akubectl describe pod etcd-k8s-master1 -n kube-system | grep listen-client-urls<\/li>\n\n\n\n<li>backup.db    #\u5907\u4efd\u5b8c\u6210\u540e\u7684\u6570\u636e<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"710\" height=\"212\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/2-3.png\" alt=\"\" class=\"wp-image-11472\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/2-3.png 710w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/2-3-300x90.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/2-3-600x179.png 600w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001\u6062\u590detcd\u6570\u636e\uff0c\u6062\u590d\u4e4b\u524d\u9700\u8981\u5148\u505c\u6b62kube-apiserver\uff0cetcd\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u5c06manifests\u548cetcd\u76ee\u5f55\u5148\u6539\u4e2a\u540d\u5b57,apiserver\u548cetcd\u81ea\u7136\u5c31\u505c\u6b62\u4e86\nmv \/etc\/kubernetes\/manifests   \/etc\/kubernetes\/manifests.bak\nmv \/var\/lib\/etcd  \/var\/lib\/etcd.bak\nmkdir \/var\/lib\/etcd   #\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684etcd\u76ee\u5f55<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u5982\u4e0b\u547d\u4ee4\u6062\u590d\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 etcdctl --endpoints=\"https:\/\/127.0.0.1:2379\"  --cert=\"\/etc\/kubernetes\/pki\/etcd\/server.crt\"  --key=\"\/etc\/kubernetes\/pki\/etcd\/server.key\"  --cacert=\"\/etc\/kubernetes\/pki\/etcd\/ca.crt\"   snapshot restore backup.db --data-dir=\/var\/lib\/etcd<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6062\u590d\u5b8c\u6210\u540e\uff0c\u5c06manifests.bak\u4fee\u6539\u56de\u6765\u5373\u53ef\u81ea\u52a8\u542f\u52a8apiserver\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mv \/etc\/kubernetes\/manifests.bak  \/etc\/kubernetes\/manifests<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770bpod\uff0c\u5982\u56fe:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"710\" height=\"269\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/3-3.png\" alt=\"\" class=\"wp-image-11475\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/3-3.png 710w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/3-3-300x114.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/02\/3-3-600x227.png 600w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8c\u3001<strong>\u4e8c\u8fdb\u5236\u5b89\u88c5\u7684etcd<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u7fa4\u5b89\u88c5\u7684etcd\uff0c\u5907\u4efd\u7684\u65f6\u5019\uff0c\u53ea\u9700\u8981\u5907\u4efd\u4e00\u4e2a\u8282\u70b9\u7684\u6570\u636e\u5c31\u53ef\u4ee5<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u6267\u884c\u547d\u4ee4\uff0c\u5907\u4efdetcd\u6570\u636e\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u6bcf\u4e00\u884c\u90fd\u662f\u53cc\u6a2a\u6760-\nETCDCTL_API=3 etcdctl snapshot save  backup.db \\\n--cacert=\/opt\/etcd\/ssl\/etcd-ca.pem \\\n--cert=\/opt\/etcd\/ssl\/server.pem \\\n--key=\/opt\/etcd\/ssl\/server-key.pem \\\n--endpoints=\"https:\/\/192.168.15.215:2379<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u5c06\u5907\u4efd\u540e\u7684\u6587\u4ef6\u590d\u5236\u5230\u5176\u4ed6etcd\u8282\u70b9\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u4e0b\u9762\u8fd9\u6761\u547d\u4ee4\u9700\u8981\u914d\u7f6ehosts\uff0c\u5982\u679c\u4e0d\u914d\u7f6e\u7528scp\u547d\u4ee4\u4e5f\u53ef\u4ee5\nfor i etcd2,etcd3;do scp backup.db root@i:\/root ;done<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u6062\u590detcd\u6570\u636e<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">etcd\u96c6\u7fa4\u5907\u4efd\u64cd\u4f5c\u53ea\u9700\u8981\u5728\u5176\u4e2d\u7684\u4e00\u4e2aetcd\u8282\u70b9\u4e0a\u5b8c\u6210\uff0c\u7136\u540e\u5c06\u5907\u4efd\u6587\u4ef6\u62f7\u8d1d\u5230\u5176\u4ed6\u8282\u70b9\uff0c\u4f46etcd\u96c6\u7fa4\u6062\u590d\u64cd\u4f5c\u5fc5\u987b\u8981\u6240\u6709\u7684etcd\u8282\u70b9\u4e0a\u5b8c\u6210<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6062\u590d\u4e4b\u524d\u9700\u8981\u5148\u5173\u95edapiserver\u548cetcd\uff0c\u5220\u9664etcd\u6570\u636e\u6587\u4ef6\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl stop kube-apiserver  #\u505c\u6b62apiserver\nsystemctl stop etcd            #\u505c\u6b62etcd\nrm -rf opt\/etcd\/data\/*         #\u5220\u9664\u6570\u636e\u76ee\u5f55\u6587\u4ef6,\u4e0d\u4e00\u5b9a\u975e\u8981\u8fd9\u4e2a\u76ee\u5f55\uff0c\u6839\u636e\u81ea\u5df1\u5b9e\u9645\u60c5\u51b5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8282\u70b91\u6267\u884c\u6062\u590d\u547d\u4ee4\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 etcdctl snapshot restore backup.db \\\n--name etcd-1 \\\n--initial-cluster=\"etcd-1=https:\/\/192.168.15.215:2380,etcd-2=https:\/\/192.168.15.216:2380,etcd-3=https:\/\/192.168.15.217:2380\" \\\n--initial-cluster-token=etcd-cluster \\\n--initial-advertise-peer-urls=https:\/\/192.168.15.215:2380 \\\n--data-dir=\/opt\/etcd\/data<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8282\u70b92\u6267\u884c\u6062\u590d\u547d\u4ee4\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 etcdctl snapshot restore backup.db \\\n--name etcd-2 \\\n--initial-cluster=\"etcd-1=https:\/\/192.168.15.215:2380,etcd-2=https:\/\/192.168.15.216:2380,etcd-3=https:\/\/192.168.15.217:2380\" \\\n--initial-cluster-token=etcd-cluster \\\n--initial-advertise-peer-urls=https:\/\/192.168.15.216:2380 \\\n--data-dir=\/opt\/etcd\/data<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8282\u70b93\u6267\u884c\u6062\u590d\u547d\u4ee4\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 etcdctl snapshot restore backup.db \\\n--name etcd-3 \\\n--initial-cluster=\"etcd-1=https:\/\/192.168.15.215:2380,etcd-2=https:\/\/192.168.15.216:2380,etcd-3=https:\/\/192.168.15.217:2380\" \\\n--initial-cluster-token=etcd-cluster \\\n--initial-advertise-peer-urls=https:\/\/192.168.15.217:2380 \\\n--data-dir=\/opt\/etcd\/data<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6062\u590d\u5b8c\u6210\u540e\uff0c\u91cd\u542fkube-apiserver\u548cetcd\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl start kube-apiserver\nsystemctl start etcd<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001\u67e5\u770b\u96c6\u7fa4\u72b6\u6001\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ETCDCTL_API=3 \/opt\/etcd\/bin\/etcdctl --cacert=\/opt\/etcd\/ssl\/etcd-ca.pem --cert=\/opt\/etcd\/ssl\/server.pem --key=\/opt\/etcd\/ssl\/server-key.pem --endpoints=\"https:\/\/192.168.15.215:2379,https:\/\/192.168.15.216:2379,https:\/\/192.168.15.217:2379\" endpoint health --write-out=table<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u603b\u7ed3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5907\u4efdETCD\u96c6\u7fa4\u65f6\uff0c\u53ea\u9700\u8981\u5907\u4efd\u4e00\u4e2aETCD\u6570\u636e\uff0c\u7136\u540e\u540c\u6b65\u5230\u5176\u4ed6\u8282\u70b9\u4e0a<\/li>\n\n\n\n<li>\u6062\u590dETCD\u6570\u636e\u65f6\uff0c\u6bcf\u4e2a\u8282\u70b9\u90fd\u8981\u6267\u884c\u6062\u590d\u547d\u4ee4<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6062\u590d\u987a\u5e8f\uff1a<strong>\u505c\u6b62kube-apiserver &#8211;&gt; \u505c\u6b62ETCD &#8211;&gt; \u6062\u590d\u6570\u636e &#8211;&gt; \u542f\u52a8ETCD &#8211;&gt; \u542f\u52a8kube-apiserve<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5907\u4efd\u811a\u672c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#!\/bin\/bash\r\ncd $(dirname $0)\r\ndateT=$(date +\"%Y-%m-%d~%H:%M:%S\")\r\nETCDCTL_API=3 \/usr\/local\/bin\/etcdctl snapshot save  \/data\/backup\/backup-etcd-${dateT}.db \\\r\n--cacert=\/etc\/ssl\/etcd\/etcd-ca.pem \\\r\n--cert=\/etc\/ssl\/etcd\/server.pem \\\r\n--key=\/etc\/ssl\/etcd\/server-key.pem \\\r\n--endpoints=\"https:\/\/192.168.51.242:2379\"<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>etcdctl\u8981\u5199\u5b8c\u6574\u8def\u5f84\uff0c\u5426\u5219\u53ef\u80fd\u627e\u4e0d\u5230\u547d\u4ee4<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>etcd\u662f Kubernetes\u7684\u5173\u952e\u7ec4\u4ef6\uff0c\u56e0\u4e3a\u5b83\u5b58\u50a8\u4e86\u96c6\u7fa4\u7684\u6574\u4e2a\u72b6\u6001\uff1a\u5176\u914d\u7f6e\uff0c\u89c4\u683c\u4ee5\u53ca\u8fd0\u884c\u4e2d\u7684\u5de5\u4f5c\u8d1f\u8f7d\u7684\u72b6\u6001 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93,23],"tags":[],"class_list":["post-11455","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-rong"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/11455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/comments?post=11455"}],"version-history":[{"count":29,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/11455\/revisions"}],"predecessor-version":[{"id":19949,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/11455\/revisions\/19949"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media\/11456"}],"wp:attachment":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media?parent=11455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/categories?post=11455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/tags?post=11455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}